﻿using System;

class AssignNullValue
{
    static void Main()
    {
        int? a = null;
        double? b = null;
        Console.WriteLine("int null value: {0}", a);
        Console.WriteLine("double null value: {0}", b);

        Console.WriteLine("int null + 2 = {0}", a + 2);
        Console.WriteLine("double null + 2 = {0}", b + 2);
    }
}
